From 9b4162453e62b78b952ac22ef207e67cfc07b070 Mon Sep 17 00:00:00 2001
From: Tinyu <tinyu0806@gmail.com>
Date: Mon, 27 Jul 2026 17:20:08 +0800
Subject: [PATCH] Enable PaperMono SD card power.

---
 src/utility/Power_Class.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/utility/Power_Class.cpp b/src/utility/Power_Class.cpp
index 0b6d704..2189340 100644
--- a/src/utility/Power_Class.cpp
+++ b/src/utility/Power_Class.cpp
@@ -330,6 +330,12 @@ namespace m5
       M5pm1.setGPIOPull(M5PM1_Class::gpio1, M5PM1_Class::pull_up);
       M5pm1.setGPIOOutput(M5PM1_Class::gpio1, true);
       M5pm1.setGPIOFunction(M5PM1_Class::gpio1, M5PM1_Class::irq);
+      {
+        auto& ioe1 = M5.getIOExpander(0);
+        ioe1.setHighImpedance(M5IOE1_Class::gpio14, false); // Turn on SD card power
+        ioe1.setDirection(M5IOE1_Class::gpio14, true);
+        ioe1.digitalWrite(M5IOE1_Class::gpio14, true);
+      }
 
       // Keep IP2316 off the I2C bus until charge control/status is requested.
       init_papermono_ip2315_access();